CN108439533A - A method of the recycling synchronous with chromium of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water - Google Patents
A method of the recycling synchronous with chromium of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water Download PDFInfo
- Publication number
- CN108439533A CN108439533A CN201810414761.XA CN201810414761A CN108439533A CN 108439533 A CN108439533 A CN 108439533A CN 201810414761 A CN201810414761 A CN 201810414761A CN 108439533 A CN108439533 A CN 108439533A
- Authority
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- China
- Prior art keywords
- chromium
- waste water
- ultraviolet light
- composite drug
- reduction composite
- Prior art date
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- Granted
Links
- 239000011651 chromium Substances 0.000 title claims abstract description 225
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 138
- 239000002351 wastewater Substances 0.000 title claims abstract description 99
- 239000003814 drug Substances 0.000 title claims abstract description 86
- 239000002131 composite material Substances 0.000 title claims abstract description 71
- 229940079593 drug Drugs 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 68
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 33
- 230000000536 complexating effect Effects 0.000 title claims abstract description 32
- 238000004064 recycling Methods 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000007747 plating Methods 0.000 claims abstract description 5
- 239000000975 dye Substances 0.000 claims abstract description 4
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical group O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 28
- WBZKQQHYRPRKNJ-UHFFFAOYSA-N disulfurous acid Chemical compound OS(=O)S(O)(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-N 0.000 claims description 12
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 12
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 239000011575 calcium Substances 0.000 claims description 11
- 229910052791 calcium Inorganic materials 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 11
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 150000003254 radicals Chemical class 0.000 claims description 11
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000011065 in-situ storage Methods 0.000 claims description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 10
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 10
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 10
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 9
- 230000001603 reducing effect Effects 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000006114 decarboxylation reaction Methods 0.000 claims description 7
- CQDMJJVHDPDPHO-UHFFFAOYSA-L magnesium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=S CQDMJJVHDPDPHO-UHFFFAOYSA-L 0.000 claims description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- UYJXRRSPUVSSMN-UHFFFAOYSA-P ammonium sulfide Chemical compound [NH4+].[NH4+].[S-2] UYJXRRSPUVSSMN-UHFFFAOYSA-P 0.000 claims description 5
- 235000010323 ascorbic acid Nutrition 0.000 claims description 5
- 239000011668 ascorbic acid Substances 0.000 claims description 5
- 229960005070 ascorbic acid Drugs 0.000 claims description 5
- FGRVOLIFQGXPCT-UHFFFAOYSA-L dipotassium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane Chemical compound [K+].[K+].[O-]S([O-])(=O)=S FGRVOLIFQGXPCT-UHFFFAOYSA-L 0.000 claims description 5
- 239000003446 ligand Substances 0.000 claims description 5
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 claims description 5
- RWPGFSMJFRPDDP-UHFFFAOYSA-L potassium metabisulfite Chemical compound [K+].[K+].[O-]S(=O)S([O-])(=O)=O RWPGFSMJFRPDDP-UHFFFAOYSA-L 0.000 claims description 5
- 229940043349 potassium metabisulfite Drugs 0.000 claims description 5
- 235000010263 potassium metabisulphite Nutrition 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 5
- 239000004323 potassium nitrate Substances 0.000 claims description 5
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 claims description 5
- 235000019252 potassium sulphite Nutrition 0.000 claims description 5
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 5
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 5
- 235000010344 sodium nitrate Nutrition 0.000 claims description 5
- 239000004317 sodium nitrate Substances 0.000 claims description 5
- 235000010265 sodium sulphite Nutrition 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 claims description 4
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 claims description 4
- 229940107816 ammonium iodide Drugs 0.000 claims description 4
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 claims description 4
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 claims description 4
- 235000010261 calcium sulphite Nutrition 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- BLQJIBCZHWBKSL-UHFFFAOYSA-L magnesium iodide Chemical group [Mg+2].[I-].[I-] BLQJIBCZHWBKSL-UHFFFAOYSA-L 0.000 claims description 4
- 229910001641 magnesium iodide Inorganic materials 0.000 claims description 4
- QENHCSSJTJWZAL-UHFFFAOYSA-N magnesium sulfide Chemical compound [Mg+2].[S-2] QENHCSSJTJWZAL-UHFFFAOYSA-N 0.000 claims description 4
- 238000006303 photolysis reaction Methods 0.000 claims description 4
- 235000010289 potassium nitrite Nutrition 0.000 claims description 4
- 239000004304 potassium nitrite Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 239000012279 sodium borohydride Substances 0.000 claims description 4
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 4
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 4
- 235000009518 sodium iodide Nutrition 0.000 claims description 4
- 235000010288 sodium nitrite Nutrition 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 229910000497 Amalgam Inorganic materials 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- FAYYUXPSKDFLEC-UHFFFAOYSA-L calcium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane Chemical compound [Ca+2].[O-]S([O-])(=O)=S FAYYUXPSKDFLEC-UHFFFAOYSA-L 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 238000007539 photo-oxidation reaction Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 230000002195 synergetic effect Effects 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 2
- PCAXGMRPPOMODZ-UHFFFAOYSA-N disulfurous acid, diammonium salt Chemical compound [NH4+].[NH4+].[O-]S(=O)S([O-])(=O)=O PCAXGMRPPOMODZ-UHFFFAOYSA-N 0.000 claims description 2
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 150000004699 copper complex Chemical class 0.000 abstract 1
- 235000012721 chromium Nutrition 0.000 description 104
- -1 hydroxyl radical free radical Chemical class 0.000 description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 12
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- 239000008399 tap water Substances 0.000 description 8
- 235000020679 tap water Nutrition 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 235000015165 citric acid Nutrition 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 5
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 4
- 206010034960 Photophobia Diseases 0.000 description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 208000013469 light sensitivity Diseases 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 235000002906 tartaric acid Nutrition 0.000 description 4
- 239000011975 tartaric acid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000015843 photosynthesis, light reaction Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 description 2
- 238000006197 hydroboration reaction Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- GDSOZVZXVXTJMI-SNAWJCMRSA-N (e)-1-methylbut-1-ene-1,2,4-tricarboxylic acid Chemical compound OC(=O)C(/C)=C(C(O)=O)\CCC(O)=O GDSOZVZXVXTJMI-SNAWJCMRSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- HEJRTTDRTYDQHS-UHFFFAOYSA-K S(=O)([O-])[O-].[Na+].S(=O)([O-])O.[Ca+2] Chemical compound S(=O)([O-])[O-].[Na+].S(=O)([O-])O.[Ca+2] HEJRTTDRTYDQHS-UHFFFAOYSA-K 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RFXSFVVPCLGHAU-UHFFFAOYSA-N benzene;phenol Chemical compound C1=CC=CC=C1.OC1=CC=CC=C1.OC1=CC=CC=C1 RFXSFVVPCLGHAU-UHFFFAOYSA-N 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of methods of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium, belong to field of waste water treatment.A kind of reduction composite drug of the present invention/UV combinations processing copper complex with synchronize remove copper removal method, step is：A, it offers medicine：It is complexed in waste water to trivalent chromium and adds reduction composite drug and stir, wastewater pH is adjusted to 4~10；B, ultraviolet light：The waste water stirred evenly is handled by ultraviolet light, chromium is precipitated with precipitated form；C, waste liqouor：Chromium is recycled by the method for separation of solid and liquid.The safe efficient processing for process hides, plating, dyestuff etc. being complexed containing trivalent chromium waste water and the recycling of chromium can be achieved in the present invention.
Description
Technical field
The invention belongs to field of industrial waste water treatment, specifically, being related at a kind of reduction composite drug joint ultraviolet light
The method for managing the recycling synchronous with chromium of trivalent chromium complexing waste water.
Background technology
Trivalent chromium (Cr (III)) passivation gradually replaces toxic, harmful sexavalence chromium passivating and process hides work in electroplating technology
The addition of chrome tanning agent leads to the generation of a large amount of trivalent chrome waste water in skill.Meanwhile having in plating and a large amount of uses of leather-making technology
Machine complexing agent, such as EDTA, NTA, citric acid, tartaric acid and oxalic acid so that chromium is in waste water usually with stable complex pattern
In the presence of.Complex state chromium has very high water solubility, and can be stabilized within the scope of extensive pH, heavy using absorption, chemistry
The conventional methods such as shallow lake, coagulation are difficult to effectively remove.
The advanced oxidation processes such as ozone oxidation, photochemical oxidation and electrochemical oxidation are that waste water is complexed in current processing Cr (III)
Common method, but using hydroxyl radical free radical (OH) strong oxidizing property destroy chelation structure while significant portion Cr (III)
It is oxidized to Cr (VI), Cr (VI) high conversion rate is caused, increases subsequent processing difficulty.At present frequently with electric flocculation, Fe2+Reduction
The methods of precipitation Cr (VI) that further removal contact break process is formed, and then a large amount of chromium-bearing sludge is produced, increase disposition
Cost.In general, existing complexing wastewater treatment method is carried out by two steps, and generated by Cr (VI) formation, chromium-bearing sludge,
The challenge of the factors such as processing cost.Therefore, being highly desirable exploitation, in-situ control Cr (VI) is generated simultaneously in contact break, and same
The new technology of step recycling chromium, to reduce the generation of Cr (VI) and chromium mud.
High-level oxidation technology based on UV has been widely used in the degradation of useless Organic substance in water, by organic matter point
The characteristic absorption relationship of chemical bond and light source in minor structure, organic matter can directly be degraded by absorbing photon, while can also
By the active oxidation species generated in situ, such as hydroxyl radical free radical (OH), Superoxide radicalanion (O2·), single line oxygen
(1O2) etc., carry out oxidative degradation.Studies have shown that Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound has good light sensitivity, irradiated in UV
Under can by ligand metal electric charge transfer act on by light degradation.As under UV effects Cr (III) occurs for Cr (III)-citric acid also
Former and citric acid decarboxylation procedure, restores the Cr (II) of generation in O2、O2·-It is transformed into under the action of the oxide species such as OH
Cr (III) and Cr (VI), ligand change the small molecular organic acids such as acetic acid, formic acid, CO after decarboxylation2And H2O.Similarly, Cr
(III) ligand metal electric charge transfer can also occur under uv illumination for-EDTA, along with the decarboxylation of Cr (III) reduction and EDTA
Process, final product are Cr (III), Cr (VI), small molecular organic acid (glycine, glyoxalic acid, acetic acid, formic acid etc.), CO2With
H2O.Therefore, the photochemical properties of Cr (III) complex compound are based on, photolysis can effectively destroy the network of Cr (III) complex compound
Structure is closed, Cr is finally discharged in the form of Cr (III) and part Cr (VI).
Invention content
1. technical problems to be solved
For Cr in the prior art (III) complexings wastewater processing technology, there are Cr (VI) high conversion rate, chromium-bearing sludge yield
Greatly, the deficiencies of processing cost is high, the present invention provides a kind of reduction composite drug joint treatment with ultraviolet light trivalent chromiums, and waste water is complexed
The method of recycling synchronous with chromium.The present invention irradiates the lower aqueous electron formed using the reducing property of composite drug itself with its light
Strong reduction characteristic can realize to the in-situ control of Cr (VI), avoid subsequent processes, simplify technological process.
2. technical solution
The principle of the invention：Since the generation of in-situ control Cr (VI) is the difficult point for aoxidizing contact break process and being faced, and it is anti-bad
The reducing agents such as hematic acid, hydroxylamine hydrochloride, sulphite, pyrosulfite, dithionite, iodized salt, borohydride salts are to Cr
(VI) there is excellent reducing power.Moreover, sulphite, pyrosulfite, dithionite, iodized salt, phenol and benzene
Diphenol easily generates aqueous electron (e under uv illuminationaq -), eaq -To Cr (VI) show it is excellent can also performance.Therefore, it utilizes
The reducing power of reducing agent itself combines the e of its photoinduction formationaq -It is expected to realize in-situ reducing Cr (VI), reaching reduces Cr
(VI) purpose generated.Solution in the pH buffer capacities of reduction composite drug and light decarboxylate control reaction process is utilized simultaneously
PH remains alkalinity or alkalescent, and release Cr (III) is prone to precipitate, and is recycled.
The present invention utilizes the light sensitivity of Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound, and ligand metal charge occurs under uv radiation
Transferance and be degraded；It restores composite drug under light illumination simultaneously, generates a series of intermediate free radical, such as eaq -、·H、
SO3·-、SO2·-、SO5·-、NO2·、CO2·、CO3·、S·-、N3·、·NH2、O2·-、 HO2, OH, Cr (V) and Cr
(IV), these intermediate free radicals, can in-situ reducing light while the decarboxylation degradation for strengthening Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound
The Cr (VI) generated in oxidation process.In addition, reduction composite drug also has certain reduction to Cr (VI), therefore, also
The addition of former composite drug can be achieved to regulate and control the original position of Cr (VI).
In order to achieve the above objectives, technical solution provided by the invention is：
A method of the recycling synchronous with chromium of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water, step
For：
A, it offers medicine：It is complexed in waste water to trivalent chromium and adds reduction composite drug and stir, wastewater pH is adjusted to 4~10；
B, ultraviolet light：The waste water stirred evenly is handled by ultraviolet light, chromium is precipitated with precipitated form；
C, waste liqouor：Chromium is recycled by the method for separation of solid and liquid.
Preferably, in step B, 30~180min of ultraviolet light.
Preferably, reduction composite drug include ascorbic acid, hydroxylamine hydrochloride, sodium sulfite, potassium sulfite, ammonium sulfite,
Magnesium sulfite, sodium pyrosulfite, potassium metabisulfite, ammonium pyrosulfite, pyrosulfurous acid calcium, pyrosulfurous acid magnesium, connects two at calcium sulfite
Sodium sulfite, potassium hyposulfite, magnesium hyposulfite, calcium hyposulfite, potassium iodide, sodium iodide, ammonium iodide, magnesium iodide,
Potassium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, ammonium borohydride, phenol, catechol, resorcinol, hydroquinone,
One kind in sodium nitrate, potassium nitrate, sodium nitrite, potassium nitrite, vulcanized sodium, potassium sulfide, magnesium sulfide, calcium sulfide, ammonium sulfide or
It is a variety of to be combined.
Preferably, in step B, ultraviolet light processing uses launch wavelength<The light source of 400nm, including：Medium pressure mercury lamp,
High-pressure sodium lamp, amalgam ultraviolet lamp, halogen lamp, xenon lamp or blackout.
Preferably, in step A, Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound is matched under ultraviolet light in stepb
Body-metal electric charge transfer is acted on and is degraded；Simultaneously in the step B, reduction composite drug under light illumination, generates a series of
Intermediate free radical, the intermediate free radical is while the decarboxylation degradation for strengthening Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound, and also
The Cr (VI) generated in former composite drug collaboration in-situ reducing photo-oxidation process.
Preferably, restore the dosage of composite drug by reduction composite drug and chromium in water molar equivalent ratio (0.05~
20)：1 adds.
Preferably, intermediate free radical includes eaq -、·H、SO3·-、SO2·-、SO5·-、NO2·、CO2·、CO3·、
S·-、N3·、·NH2、O2·-、HO2, OH, Cr (V) and Cr (IV).
Preferably, oxide species synergistic oxidation contact break is generated in step B in ultraviolet light photolysis step；The oxide
Kind includes OH, HO2·、O2·, Cr (V) and Cr (IV).
Preferably, in step B to added reduction composite drug trivalent chromium complexing waste water carry out light radiation while into
Row aeration.
Preferably, chromium sediment is light green, and main component is chrome green.
A kind of application for the method restoring the recycling synchronous with chromium of composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water,
The processing of waste water is complexed in Cr (III) applied to the discharge of the industries such as plating, process hides and dyestuff.
3. advantageous effect
Compared with prior art, the beneficial effects of the invention are as follows：
(1) waste water recycling synchronous with chromium is complexed in a kind of reduction composite drug of the invention joint treatment with ultraviolet light trivalent chromium
Using the light sensitivity of Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound ligand-metal electric charge transfer effect occurs under uv radiation for method
And it is degraded；It restores composite drug under light illumination simultaneously, generates a series of intermediate free radical, such as eaq -、·H、SO3·-、
SO2·-、SO5·-、NO2·、CO2·、CO3·、S·-、N3·、·NH2、 O2·-、HO2, OH, Cr (V) and Cr (IV),
These intermediate free radicals, can in-situ reducing photooxidation while the decarboxylation degradation for strengthening Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound
The Cr (VI) generated in the process；In addition, reduction composite drug also has certain reduction to Cr (VI), with intermediate free radical
It can act synergistically, therefore, the addition for restoring composite drug can be achieved to regulate and control the original position of Cr (VI)；
(2) waste water recycling synchronous with chromium is complexed in a kind of reduction composite drug of the invention joint treatment with ultraviolet light trivalent chromium
Method, the residual concentration of total chromium is less than 1.5mg/L after processing, and the generation concentration of Cr VI is less than 0.5 mg/L, it is comprehensive to meet sewage
Close the requirement of discharge standard (GB8978-2002)；
(3) waste water recycling synchronous with chromium is complexed in a kind of reduction composite drug of the invention joint treatment with ultraviolet light trivalent chromium
Method, reduction composite drug combined U V processing methods irradiate the lower water formed using the reducing property of composite drug itself with its light
Closing the strong reduction characteristic of electronics can realize to the in-situ control of Cr (VI), avoid subsequent processes, simplify technological process；
(4) waste water recycling synchronous with chromium is complexed in a kind of reduction composite drug of the invention joint treatment with ultraviolet light trivalent chromium
Method utilizes generation OH, HO in the light sensitivity and photolysis step of chromium complex2·、O2·, Cr (V) and Cr (IV) etc. it is a variety of
Oxide species synergistic oxidation contact break, obtains higher remineralization efficacy；It is formed simultaneously Cr (III) and (includes the Cr of contact break release
(III) and through Cr (VI) it is reduced to Cr (III)) sediment, component is more single, is chromated oxide, can direct recycling profit
With.
Description of the drawings
Fig. 1 is the design sketch of present invention removal Cr-EDTA, and wherein ■ is that TOC removes curve, and zero removes curve for total chromium,
△ is Cr VI formation curve.
Specific implementation mode
With reference to the accompanying drawings of the specification and specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, tests the removal of chromium in 0.2mmol/L Cr-EDTA waste water, and step is：
A, it offers medicine：Reduction composite drug is added into the waste water of 0.2mmol/L Cr-EDTA (by ascorbic acid：Hydrochloric acid hydroxyl
Amine molar equivalent ratio=1：1 is combined) and stir, additive amount 2mmol/L, wastewater pH initial value 3.5,25 DEG C of temperature, it gives up
PH is adjusted to 7 by water by sodium hydroxide solution；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into medium pressure mercury lamp<400nm)
180min is handled, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.23mg/L, a concentration of 0.1mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 55%.
As shown in Figure 1, removing the design sketch of Cr-EDTA for the present embodiment, wherein ■ is that TOC removes curve, and zero is total chromium
Curve is removed, △ is Cr VI formation curve.
Embodiment 2
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method is applied to the removal of chromium in plating chemical industrial park waste water, and initial pH=2.3, initial chromium concn is 23.8mg/L, and TOC is dense
Degree is 36mg/L, and step is：
A, it offers medicine：Be added with Cr-EDTA molar ratios be 1 ︰ 1 reduction composite drug (by sodium sulfite：Potassium sulfite mole
Equivalent proportion=1：1 is combined) and it stirs, wastewater pH initial value 2.3,25 DEG C of temperature, waste water is by sodium hydroxide solution by pH
It is adjusted to 8；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into high-pressure sodium lamp<400nm)
180min is handled, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.38mg/L, a concentration of 0.4mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 57%.
Embodiment 3
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment are with a concentration of 0.2mmol/L of tap water preparation Cr- citric acid wastewaters, pH=4,25 DEG C of temperature, step：
A, it offers medicine：Be added with Cr- citric acid molar ratios be 1 ︰ 2 reduction composite drug (by ammonium sulfite：Magnesium sulfite rubs
That equivalent proportion=1：1 is combined) and it stirs, wastewater pH initial value 4,25 DEG C of temperature, waste water is by sodium hydroxide solution by pH
It is adjusted to 6；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into amalgam ultraviolet lamp<
180min 400nm) is handled, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.2mg/L, a concentration of 0.36mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 69%.
Embodiment 4
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, it is 0.2mmol/L that experiment prepares Cr- tartaric acid waste strengths with tap water, pH=5.5,25 DEG C of temperature, and step is：
A, it offers medicine：Be added with Cr- tartaric acid molar ratios be 5 ︰ 1 reduction composite drug (by calcium sulfite：Sodium pyrosulfite
Molar equivalent ratio=1：1 is combined) and it stirs, wastewater pH initial value 5.5,25 DEG C of temperature, waste water is by hydrochloric acid solution by pH
It is adjusted to 5；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into halogen lamp<400nm) place
120min is managed, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.1mg/L, a concentration of 0.32mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 65%.
Embodiment 5
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepares 0.1mmol/L Cr- tartaric acid solutions with tap water and 0.1mmol/L Cr- citric acid solution equal proportions are mixed
Synthesis simulated wastewater, pH=3.5,25 DEG C of temperature, step are：
A, it offers medicine：Be added with simulated wastewater molar ratio be 10 ︰ 1 reduction composite drug (by potassium metabisulfite：Pyrosulfurous acid
Ammonium molar equivalent ratio=1：1 is combined) and stir, wastewater pH initial value 3.5,25 DEG C of temperature, waste water is molten by sodium hydroxide
PH is adjusted to 6 by liquid；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into xenon lamp<400nm) place
180min is managed, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.35mg/L, a concentration of 0.22mg/L, TOC of Cr (VI)
(total organic carbon) removal rate is about 62%.
Embodiment 6
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, using the removal of chromium in Mr. Yu's tannery waste, initial pH=3.6, initial chromium concn is 15.6 mg/L, and TOC is a concentration of
29mg/L, step are：
A, it offers medicine：Be added with Cr molar ratios be 8 ︰ 1 reduction composite drug (by pyrosulfurous acid calcium：Pyrosulfurous acid magnesium mole
Equivalent proportion=1：1 is combined) and it stirs, wastewater pH initial value 3.6,25 DEG C of temperature, waste water is by sodium hydroxide solution by pH
It is adjusted to 9；
B, ultraviolet light：Ultraviolet light (UV irradiations, the wavelength that the waste water of step A is passed through into blackout<400nm) place
180min is managed, chromium is precipitated with absinthe-green precipitated form, and main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.19mg/L, a concentration of 0.26mg/L, TOC of Cr (VI)
(total organic carbon) removal rate is about 65%.
Embodiment 7
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, using the removal of chromium in Mr. Yu's dye house effluents, initial pH=5.5, initial chromium concn is 13mg/L, and TOC is a concentration of
32mg/L, step are：
A, it offers medicine：Be added with Cr molar ratios be 15 ︰ 1 reduction composite drug (by sodium dithionite：Potassium hyposulfite
Molar equivalent ratio=1：1 is combined) and stir, wastewater pH initial value 5.5,25 DEG C of temperature does not adjust pH；
B, ultraviolet light：The waste water of step A is handled into 180min by ultraviolet light (UV irradiations), chromium is with light green
Precipitated form be precipitated, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.35mg/L, a concentration of 0.35mg/L, TOC of Cr (VI)
(total organic carbon) removal rate is about 61%.
Embodiment 8
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepare 0.2mmol/L Cr- oxalic acid solution equal proportions with tap water and are mixed into simulated wastewater, pH=3.5, temperature 25
DEG C, step is：
A, it offers medicine：Be added with simulated wastewater molar ratio be 1 ︰ 20 reduction composite drug (by magnesium hyposulfite：Lian Erya
Calcium sulfate molar equivalent ratio=1：1 is combined) and stir, wastewater pH initial value 3.5,25 DEG C of temperature, waste water passes through hydroxide
PH is adjusted to 5.5 by sodium solution；
B, ultraviolet light：The waste water of step A is handled into 180min by ultraviolet light (UV irradiations), chromium is with light green
Precipitated form be precipitated, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 1.05mg/L, a concentration of 0.39mg/L, TOC of Cr (VI)
(total organic carbon) removal rate is about 60%.
Embodiment 9
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepare 0.15mmol/L Cr- citric acid solution equal proportions with tap water and are mixed into simulated wastewater, pH=4, temperature
25 DEG C, step is：
A, it offers medicine：Be added with simulated wastewater molar ratio be 1 ︰ 10 reduction composite drug (by magnesium hyposulfite：Lian Erya
Calcium sulfate molar equivalent ratio=1：1 is combined) and stir, wastewater pH initial value 4,25 DEG C of temperature, waste water passes through sodium hydroxide
PH is adjusted to 8.5 by solution；
B, ultraviolet light：The waste water of step A is handled into 150min by ultraviolet light (UV irradiations), chromium is with light green
Precipitated form be precipitated, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 0.9mg/L, a concentration of 0.27mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 65%.
Embodiment 10
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepare 0.15mmol/L Cr-NTA solution equal proportions with tap water and are mixed into simulated wastewater, pH=5, temperature 25
DEG C, step is：
A, it offers medicine：Be added with simulated wastewater Cr-NTA molar ratios be 2 ︰ 1 reduction composite drug (by magnesium hyposulfite：
Calcium hyposulfite molar equivalent ratio=1：1 is combined) and stir, wastewater pH initial value 5,25 DEG C of temperature does not adjust PH；
B, ultraviolet light：The waste water of step A is handled into 180min by ultraviolet light (UV irradiations), chromium is with light green
Precipitated form be precipitated, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 0.85mg/L, a concentration of 0.3mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 72%.
Embodiment 11
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepare 0.35mmol/L Cr-NTA solution equal proportions with tap water and are mixed into simulated wastewater, pH=5, temperature 25
DEG C, step is：
A, it offers medicine：Be added with simulated wastewater Cr-NTA molar ratios be 5 ︰ 1 reduction composite drug (by ascorbic acid, hydrochloric acid
Azanol, sodium sulfite, potassium sulfite, ammonium sulfite, magnesium sulfite, calcium sulfite, sodium pyrosulfite, potassium metabisulfite, Jiao Ya
Ammonium sulfate, pyrosulfurous acid calcium, pyrosulfurous acid magnesium, sodium dithionite, potassium hyposulfite, magnesium hyposulfite, even two sulfurous
Sour calcium, potassium iodide, sodium iodide, ammonium iodide, magnesium iodide, potassium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, hydroboration
Ammonium, phenol, catechol, resorcinol, hydroquinone, sodium nitrate, potassium nitrate, sodium nitrite, potassium nitrite, vulcanized sodium, sulphur
Change potassium, magnesium sulfide, calcium sulfide, one or more arbitrary proportionings in ammonium sulfide to be combined, in the present embodiment by hydroquinone,
Sodium nitrate and potassium nitrate molar equivalent ratio=1：1：1 is combined) and stir, wastewater pH initial value 5,25 DEG C of temperature is not adjusted
PH；
B, ultraviolet light：The waste water of step A is handled into 180min by ultraviolet light (UV irradiations), chromium is with light green
Precipitated form be precipitated, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 0.55mg/L, a concentration of 0.2mg/L of Cr (VI), TOC (total
Organic carbon) removal rate is about 76%.
Embodiment 12
A kind of reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water recycling synchronous with chromium of the present embodiment
Method, experiment prepare 0.54mmol/L Cr-NTA solution equal proportions with tap water and are mixed into simulated wastewater, pH=5, temperature 25
DEG C, step is：
A, it offers medicine：Be added with simulated wastewater Cr-NTA molar ratios be 10 ︰ 1 reduction composite drug (by ascorbic acid, hydrochloric acid
Azanol, sodium sulfite, potassium sulfite, ammonium sulfite, magnesium sulfite, calcium sulfite, sodium pyrosulfite, potassium metabisulfite, Jiao Ya
Ammonium sulfate, pyrosulfurous acid calcium, pyrosulfurous acid magnesium, sodium dithionite, potassium hyposulfite, magnesium hyposulfite, even two sulfurous
Sour calcium, potassium iodide, sodium iodide, ammonium iodide, magnesium iodide, potassium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, hydroboration
Ammonium, phenol, catechol, resorcinol, hydroquinone, sodium nitrate, potassium nitrate, sodium nitrite, potassium nitrite, vulcanized sodium, sulphur
The one or more arbitrary proportionings changed in potassium, magnesium sulfide, calcium sulfide, ammonium sulfide are combined, by ammonium sulfide, iodine in the present embodiment
Change magnesium and pyrosulfurous acid magnesium molar equivalent ratio=1：1：1 is combined) and stir, wastewater pH initial value 5,25 DEG C of temperature is uncomfortable
Save PH；
B, ultraviolet light：By the waste water of step A by ultraviolet light (UV irradiations) handle 180min, irradiation it is same
When, waste water is aerated by bottom, to accelerate the formation of precipitation, chromium to be analysed with the precipitated form of absinthe-green single-size
Go out, main component is chrome green；
C, waste liqouor：By the mode of the method for separation of solid and liquid, such as miillpore filter, chromium is recycled.
After testing, in the present embodiment, remaining total chromium is 0.55mg/L, a concentration of 0.21mg/L, TOC of Cr (VI)
(total organic carbon) removal rate is about 81%.
Schematically the invention and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also the invention one of embodiment, actual test data is not limited thereto.So if this
The those of ordinary skill in field is enlightened by it, in the case where not departing from this creation objective, is not inventively designed and is somebody's turn to do
The similar frame mode of technical solution and embodiment, should all belong to the protection domain of this patent.
Claims (10)
1. a kind of method that waste water recycling synchronous with chromium is complexed in reduction composite drug joint treatment with ultraviolet light trivalent chromium, feature exist
In step is：
A, it offers medicine：It is complexed in waste water to trivalent chromium and adds reduction composite drug and stir, wastewater pH is adjusted to 4~10；
B, ultraviolet light：The waste water stirred evenly is handled by ultraviolet light, chromium is precipitated with precipitated form；
C, waste liqouor：Chromium is recycled by the method for separation of solid and liquid.
It is recycled 2. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 1 is synchronous with chromium
Method, it is characterised in that：In the step B, 30~180min of ultraviolet light.
It is recycled 3. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 1 is synchronous with chromium
Method, it is characterised in that：The reduction composite drug includes ascorbic acid, hydroxylamine hydrochloride, sodium sulfite, potassium sulfite, Asia
Ammonium sulfate, magnesium sulfite, calcium sulfite, sodium pyrosulfite, potassium metabisulfite, ammonium pyrosulfite, pyrosulfurous acid calcium, pyrosulfurous acid
Magnesium, sodium dithionite, potassium hyposulfite, magnesium hyposulfite, calcium hyposulfite, potassium iodide, sodium iodide, ammonium iodide,
It is magnesium iodide, potassium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, ammonium borohydride, phenol, catechol, resorcinol, right
In benzenediol, sodium nitrate, potassium nitrate, sodium nitrite, potassium nitrite, vulcanized sodium, potassium sulfide, magnesium sulfide, calcium sulfide, ammonium sulfide
It is one or more to be combined.
It is recycled 4. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 3 is synchronous with chromium
Method, it is characterised in that：In the step B, ultraviolet light processing uses launch wavelength<The light source of 400nm, including：In
Pressure mercury lamp, high-pressure sodium lamp, amalgam ultraviolet lamp, halogen lamp, xenon lamp or blackout.
It is recycled 5. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 4 is synchronous with chromium
Method, it is characterised in that：In the step A, Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound is in stepb under ultraviolet light
The effect of ligand metal electric charge transfer occurs and is degraded；Simultaneously in the step B, reduction composite drug under light illumination, generates
A series of intermediate free radical, the intermediate free radical are same the decarboxylation degradation for strengthening Cr (III)-ammonia carboxylic/hydroxyl carboxylic complex compound
When, and restore the Cr (VI) generated in composite drug collaboration in-situ reducing photo-oxidation process.
It is recycled 6. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 4 is synchronous with chromium
Method, it is characterised in that：The dosage of the reduction composite drug is by the molar equivalent ratio for restoring composite drug and chromium in water
(0.05~20)：1 adds.
It is recycled 7. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 5 is synchronous with chromium
Method, it is characterised in that：The intermediate free radical includes eaq -、·H、SO3·-、SO2·-、SO5·-、NO2·、CO2·、
CO3·、S·-、N3·、·NH2、O2·-、HO2, OH, Cr (V) and Cr (IV)；Ultraviolet light photodissociation in the step B
Oxide species synergistic oxidation contact break is generated in the process；The oxide species include OH, HO2·、O2·, Cr (V) and Cr (IV).
It is recycled 8. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 7 is synchronous with chromium
Method, it is characterised in that：Light radiation is carried out to the trivalent chromium complexing waste water for having added reduction composite drug in the step B
It is carried out at the same time aeration.
It is recycled 9. reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water according to claim 7 is synchronous with chromium
Method, it is characterised in that：The chromium sediment is light green, and main component is chrome green.
10. a kind of claim 1 to 9 any the reduction composite drug joint treatment with ultraviolet light trivalent chromium complexing waste water and chromium
The application of the method for synchronous recycling, it is characterised in that：Cr (III) complexings applied to the discharge of the industries such as plating, process hides and dyestuff
The processing of waste water.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794491A (en) * | 2020-12-10 | 2021-05-14 | 西南兵工重庆环境保护研究所有限公司 | Combined water treatment process for removing hexavalent chromium in wastewater |
| US11078143B2 (en) | 2019-09-16 | 2021-08-03 | Chevron Phillips Chemical Company, Lp | Chromium-catalyzed production of alcohols from hydrocarbons |
| CN113371872A (en) * | 2021-05-31 | 2021-09-10 | 广东工业大学 | Ultraviolet-based sulfite-containing petrochemical wastewater pretreatment method |
| US11173475B2 (en) * | 2018-09-17 | 2021-11-16 | Chevron Phillips Chemical Company Lp | Light treatment of chromium catalysts and related catalyst preparation systems and polymerization processes |
| CN114620874A (en) * | 2022-05-16 | 2022-06-14 | 北京北方宏拓环境科技有限公司 | Method for recovering hexavalent chromium in wastewater |
| CN114702071A (en) * | 2022-04-15 | 2022-07-05 | 合肥工业大学 | Method for preparing chromium sesquioxide by utilizing high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
| US11396485B2 (en) | 2019-09-16 | 2022-07-26 | Chevron Phillips Chemical Company Lp | Chromium-based catalysts and processes for converting alkanes into higher and lower aliphatic hydrocarbons |
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Families Citing this family (1)
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2640071A1 (en) * | 2006-01-25 | 2007-08-02 | The Administrators Of The Tulane Educational Fund | Oxidative treatment method |
| CN101525674A (en) * | 2009-04-02 | 2009-09-09 | 西藏自治区拉萨皮革厂 | Method for stabilizing content of trivalent chromium and minimum hexavalent chromium in leather |
| CN101716450A (en) * | 2009-12-18 | 2010-06-02 | 哈尔滨工业大学 | Method for deoxidization by combining compound drugs and UV |
| WO2013116618A1 (en) * | 2012-02-03 | 2013-08-08 | The Research Foundation Of State University Of New York | Electrochemical synthesis of nitro-chitosan |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN105060455A (en) * | 2015-07-29 | 2015-11-18 | 中国科学院南海海洋研究所 | Natural pyrite based photocatalysis method for synergic removal of heavy metal-organic pollutants from water |
| CN107188265A (en) * | 2017-06-21 | 2017-09-22 | 温州大学 | It is a kind of that the method that heavy metal is complexed waste water is handled based on UV/ chlorine high-level oxidation technology |
-
2018
- 2018-05-03 CN CN201810414761.XA patent/CN108439533B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2640071A1 (en) * | 2006-01-25 | 2007-08-02 | The Administrators Of The Tulane Educational Fund | Oxidative treatment method |
| CN101525674A (en) * | 2009-04-02 | 2009-09-09 | 西藏自治区拉萨皮革厂 | Method for stabilizing content of trivalent chromium and minimum hexavalent chromium in leather |
| CN101716450A (en) * | 2009-12-18 | 2010-06-02 | 哈尔滨工业大学 | Method for deoxidization by combining compound drugs and UV |
| WO2013116618A1 (en) * | 2012-02-03 | 2013-08-08 | The Research Foundation Of State University Of New York | Electrochemical synthesis of nitro-chitosan |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN105060455A (en) * | 2015-07-29 | 2015-11-18 | 中国科学院南海海洋研究所 | Natural pyrite based photocatalysis method for synergic removal of heavy metal-organic pollutants from water |
| CN107188265A (en) * | 2017-06-21 | 2017-09-22 | 温州大学 | It is a kind of that the method that heavy metal is complexed waste water is handled based on UV/ chlorine high-level oxidation technology |
Non-Patent Citations (1)
| Title |
|---|
| YE YUXUAN等: "Efficient removal of Cr(III)-organic complexes from water using UVFe(III) system", 《WATER RESEARCH》 * |
Cited By (22)
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|---|---|---|---|---|
| US11338278B2 (en) * | 2018-09-17 | 2022-05-24 | Chevron Phillips Chemical Company Lp | Light treatment of chromium catalysts and related catalyst preparation systems and polymerization processes |
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| US11969718B2 (en) | 2018-09-17 | 2024-04-30 | Chevron Phillips Chemical Company Lp | Modified supported chromium catalysts and ethylene-based polymers produced therefrom |
| US11376575B2 (en) | 2018-09-17 | 2022-07-05 | Chevron Phillips Chemical Company Lp | Modified supported chromium catalysts and ethylene-based polymers produced therefrom |
| US11173475B2 (en) * | 2018-09-17 | 2021-11-16 | Chevron Phillips Chemical Company Lp | Light treatment of chromium catalysts and related catalyst preparation systems and polymerization processes |
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| US11753358B2 (en) | 2019-09-16 | 2023-09-12 | Chevron Phillips Chemical Company Lp | Chromium-catalyzed production of alcohols from hydrocarbons |
| CN112794491A (en) * | 2020-12-10 | 2021-05-14 | 西南兵工重庆环境保护研究所有限公司 | Combined water treatment process for removing hexavalent chromium in wastewater |
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| CN114702071B (en) * | 2022-04-15 | 2023-11-03 | 合肥工业大学 | Method for preparing chromium oxide by using high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
| CN114702071A (en) * | 2022-04-15 | 2022-07-05 | 合肥工业大学 | Method for preparing chromium sesquioxide by utilizing high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
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